package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.minio.MinioConfiguration;
import com.atguigu.lease.common.minio.MinioProperties;
import com.atguigu.lease.web.admin.service.FileService;
import io.minio.*;
import io.minio.errors.*;
import org.springframework.beans.SimpleTypeConverter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

@Service
public class FileServiceImpl implements FileService {
    @Autowired
    private MinioProperties properties;
    @Autowired
    private MinioClient client;


    @Override
    public String upload(MultipartFile file) {
//        try {
//            boolean b = minioClient.bucketExists(BucketExistsArgs.builder().bucket(minioProperties.getBucketName()).build());
//            if (!b){
//                minioClient.makeBucket(MakeBucketArgs.builder().bucket(minioProperties.getBucketName()).build());
//                minioClient.setBucketPolicy(SetBucketPolicyArgs.
//                        builder().bucket(minioProperties.getBucketName()).
//                        config(createBucketPolicyConfig(minioProperties.getBucketName())).build());
//            }
//            String filename = new SimpleDateFormat("yyyyMMdd").format(new Date()) + "/" + UUID.randomUUID() + "-" + file.getOriginalFilename();
//            minioClient.putObject(PutObjectArgs.builder().
//                    bucket(minioProperties.getBucketName()).
//                    stream(file.getInputStream(),file.getSize(),-1).
//                    object(filename).
//                    contentType(file.getContentType()).
//                    build());
//
//        }catch (Exception e){
//            e.printStackTrace();
//        }


            try {
                boolean bucketExists = client.bucketExists(BucketExistsArgs.builder().bucket(properties.getBucketName()).build());
                if (!bucketExists) {
                    client.makeBucket(MakeBucketArgs.builder().bucket(properties.getBucketName()).build());
                    client.setBucketPolicy(SetBucketPolicyArgs.builder().bucket(properties.getBucketName()).config(createBucketPolicyConfig(properties.getBucketName())).build());
                }

                String filename = new SimpleDateFormat("yyyyMMdd").format(new Date()) + "/" + UUID.randomUUID() + "-" + file.getOriginalFilename();
                client.putObject(PutObjectArgs.builder().
                        bucket(properties.getBucketName()).
                        object(filename).
                        stream(file.getInputStream(), file.getSize(), -1).
                        contentType(file.getContentType()).build());

                return String.join("/", properties.getEndpoint(), properties.getBucketName(), filename);

            } catch (Exception e) {
                e.printStackTrace();
            }
            return null;


    }




    private String createBucketPolicyConfig(String bucketName) {

        return """
            {
              "Statement" : [ {
                "Action" : "s3:GetObject",
                "Effect" : "Allow",
                "Principal" : "*",
                "Resource" : "arn:aws:s3:::%s/*"
              } ],
              "Version" : "2012-10-17"
            }
            """.formatted(bucketName);
    }
}
